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ikadub [295]
3 years ago
14

Are oxides bases?

Chemistry
1 answer:
olasank [31]3 years ago
5 0

Answer:

yes

Explanation:

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In basic solution, se2− and so32− ions react spontaneously and e o cell = 0.35 v. (a) write the balanced half-reactions for this
Annette [7]

(a)    Write balanced half-reactions for the process:

Oxidation: Se^2- (aq) → Se (s) + 2e-

Reduction: 2So3^2- (aq) + 3H2O (l) + 4e- → S2O3^2- + 6OH- (aq)

(b)   If E sulfite is 0.57 V, calculate E selenium:

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An aluminium kettle weighs 1.05 Kg.
Kipish [7]

Answer:Explained

Explanation:

Given

mass of aluminium kettle(m_k)=1.05 kg

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Q=m_kc_k\Delta T

Q=1.05\times 0.9\times 1000\times \left ( 99-23\right )

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(c)If kettle contains water 1.25 L of water i.e. 1.246 kg of water then heat required to raise the temperature from 23 to 99

Q=m_kc_k\left ( \Delta T\right )+m_wc_w\left ( \Delta T\right )

Q=1.05\times 0.9\times 1000\times \left ( 99-23\right )+1.246\times 4.184\times 1000\times \left ( 99-23\right )

Q=71.82+396.20=468.028 kJ

7 0
4 years ago
How can bonding determine the properties of a substance?
levacccp [35]

Answer:

Chemical bonds are the electrical forces of attraction that hold atoms or ions together to form molecules. Different types of chemical bonds and their varying intensity are directly responsible for some of the physical properties of minerals such as hardness, melting and boiling points, solubility, and conductivity.

Explanation:

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Element in the periodic table are arranged by
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elements in the periodic table are arranged by the atomic number of the element

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